The Black Mountain (Y Mynydd Du) from Glyntawe Walk
A spectacular ridge walk to Fan Brycheiniog, Fan Foel and Waun Lefrith. Return via a glacial valley below the ridge, or remote moorland, shakeholes and a waterfall
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Bing
Switch to: OS Explorer 1:25K, OS Landranger 1:50K
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OS
Ordnance Survey (OS) mapping covers England, Wales and Scotland - not Northern Ireland or the Channel Islands. Isle of Man is 1:50K only.
Legend : OS 1:25Kpdf,
OS 1:50Kpdf.
There are paper 1:25K maps for both Isle of Man and the Channel Islands
OSI, OSNI
OSI and OSNI produce paper 1:50K and some 1:25K maps. OSI isn't online. OSNI (then Basemap Gallery / 4 squares icon, then 25K or 50K)
OpenStreetMap
OpenStreetMap is an opensource global crowd sourced map. It is better at showing footpaths than the OS in some places.
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(On Android) Varies by device. Try press and hold Power then Volume -, or try press and hold Power
